Posted for "Nicholas Paczkowski" <npaczkowski@telus.net>:

I had the same problem with the same dated batch of Hysol 9339 - it remained
"tacky" for a couple of weeks - but eventually hardened up. Thankfully I had
not used this batch on anything structural but I shudder to think.. Thanks
to all who identified this problem - since I am just about to close my wing.